CN207116688U - Double frequency high-gain omni-directional antenna - Google Patents
Double frequency high-gain omni-directional antenna Download PDFInfo
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- CN207116688U CN207116688U CN201720990599.7U CN201720990599U CN207116688U CN 207116688 U CN207116688 U CN 207116688U CN 201720990599 U CN201720990599 U CN 201720990599U CN 207116688 U CN207116688 U CN 207116688U
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Abstract
The utility model provides a kind of double frequency high-gain omni-directional antenna, it includes being arranged at least two double frequency half-wave dipole units on substrate, high frequency oscillator unit is provided between two neighboring double frequency oscillator unit, the double frequency oscillator unit is fed with high frequency oscillator unit by printing parallel two-conductor feeder line.The utility model provides the cheap AP websites/terminal antenna of a kind of two-band, high-gain, omni-directional, high efficiency, miniaturization, cost for mobile communication, and double frequency for other frequency ranges or the optimization design of multi-frequency omni-directional antenna provide effective or beneficial reference method.
Description
【Technical field】
A kind of mobile communication base station/terminal antenna equipment and technology are the utility model is related to, more particularly to a kind of double frequency
High-gain omni-directional antenna and its technology.
【Background technology】
The dream of " all things on earth freely interconnects ", " information follow one's inclinations to " will be achieved in the 5G epoch.One of 5G communications is fine
New application field is Internet of Things.Internet of Things (IoT, Internet of Things), as the term suggests it is embedded in article
Wireless module is simultaneously networked by WAP (AP, Access Point), makes a network terminal, it can be carried out
Access and supervise.Due to the crowd of as many as number of articles, category, the terminal device quantity for accessing Internet of Things is magnanimity, and wireless
Number of access point is then relatively fewer.Because terminal device and AP relative position and orientation are arbitrary, both use omnidirectional antennas
Line can ensure good communication efficiency.This requires that antenna pattern must have preferable uniformity, i.e. out-of-roundness in horizontal plane
Preferably.Secondly, AP antennas should have more high-gain (G >=3dBi) than terminal antenna, could be obtained in the terminal at distant place
Higher signal to noise ratio and data transmission rate.Further, since AP base stations and terminal device widespread deployment, need to largely be purchased, its is universal
With it is cheap, economy is high etc. requires, therefore frequently with omnidirectional radiation, single polarization, printing simple in construction, cost is cheap
List/dipole antenna.Secondly, the frequency range of this kind of antenna requirement covering is more and more, typically 2G/3G/4G/WLAN/WiFi
It is two or more in (0.698-0.96GHz/1.71-2.70GHz/3.5GHz/5.5GHz) frequency band, and be spaced very wide
Frequency range.In view of above-mentioned requirements, in the case where profile, size, cost etc. are strictly limited, using conventional fat piece of list/dipole
Continuously to cover the ultra wide band scheme of each frequency range, it is impossible to meet the requirement of out-of-roundness well.Conventional printing list/dipole
Antenna, increase its breadth length ratio, i.e., two-arm is become into fat bulk by fine rule shape, you can effective broadening bandwidth, dipole as shown in Figure 2
Sub-antenna two-arm 101.Electrically large sizes relative to high frequency however, due to oscillator wider width, thus high frequency direction figure out-of-roundness compared with
Difference.Moreover, in order to obtain more high-gain, wideband dipole must collinear set battle array.It is array-fed in view of the out-of-roundness of directional diagram
The center series-feed network overlapped with axis is preferably used, i.e. feeder line port is located at array midpoint, and energy is presented successively toward array both ends
Enter each array element.As shown in figure 3, because feeder line 102 and array element 103 are coplanar, in order that both are non-intersect, it is necessary to by array element pars intermedia
Cutting removes, and at this moment fat piece of dipole bandwidth will significantly narrow.Changed in quality by ultra wide band into after single wide frequency antenna, above-mentioned can not be covered
Every larger multiple frequency ranges.In addition, terminal device often more has a preference for narrow strip Antenna Design so that the more graceful association of outward appearance
Adjust.This to become infeasible by increasing the conventional method of oscillator width broadening bandwidth, it is necessary to carries out depth innovative ability satisfaction
Above-mentioned requirements.Furthermore efficiency is also an important indicator of AP websites/terminal antenna, it determines that the battery of equipment uses the longevity
Life and stand-by time.Finally, antenna size is often strictly limited, is now difficult to by way of increasing array element to improve gain,
And his method must be separately looked for make full use of space, so as to improve gain.
【The content of the invention】
The utility model it is intended that mobile communication to provide the cheap double frequency of a kind of omni-directional, high efficiency, miniaturization, cost high
Gain omni-directional antenna.
To realize the utility model purpose, there is provided following technical scheme：
The utility model provides a kind of double frequency high-gain omni-directional antenna, and it includes being arranged at least two double frequencies on substrate
Oscillator unit, high frequency oscillator unit is provided between two neighboring double frequency oscillator unit, the double frequency oscillator unit and high frequency oscillator
Unit is attached feed by two-conductor feeder line.
Preferably, the double frequency oscillator unit is half-wave dipole, and two oscillator arms include symmetrically arranged interior minor matters respectively,
The symmetrically arranged outer minor matters on the outside of interior minor matters, interior minor matters and outer minor matters bottom are connected as one by horizontal minor matters.Preferably,
The interior minor matters grow a width of L1×W1, its end is wider section；The outer minor matters grow a width of L2×W2。
Preferably, the high frequency oscillator unit includes one group of brachyplast section symmetric arrays in axis both sides.
Preferably, two groups of minor matters of outer minor matters and interior minor matters are parallel to each other, and outer minor matters are longer than interior minor matters, i.e. L1<L2。
Preferably, the horizontal minor matters center is towards lower process, is set to balanced feeding point, and the initiating terminal of interior minor matters and outer minor matters is not
Concordantly, horizontal minor matters outward flange is bending segment.Oscillator two-arm is spaced apart, and two-arm center edge is not concordant；Center is high
Frequency vibration may be the same or different with the HFS profile among the double frequency oscillator at both ends.
Preferably, the spacing of two neighboring double frequency oscillator unit is d, and at least two double frequencies oscillator unit is coaxial or common
Line group battle array, the spacing of adjacent two array element is (0.50~0.75) × λC, λCCentered on frequency wavelength.
Preferably, 0.22~0.25 times of the about respective corresponding frequency range centre wavelength of the length of interior minor matters and outer minor matters；
The width of each pair minor matters and length ratio are about 0.1~0.3.
Preferably, the upper arm of at least two double frequency oscillator units and high frequency oscillator unit is located at substrate front side, underarm then position
In substrate back side, the two-conductor feeder line is arranged on the substrate tow sides, and is set along array center's axis direction, two-conductor feedback
The upper arm of two double frequency oscillator units and high frequency oscillator unit is connected by the feeder line up and down of line with underarm respectively, forms symmetrical
The upper arm and underarm of array.
Preferably, the not wide quarter-wave transformer section of more piece of the two-conductor feeder line including cascade.
Preferably, distributing point of the feeder line center of body feeder line as array, specially connecting coaxial cable, 50 Ω coaxial electricals
Cable.Preferably, the internal and external conductor of cable connects the upper lower conductor of two-conductor feeder line respectively, is welded in the feed point weldering of lower conductor
Disk.In two ends of two-conductor feeder line, short circuit above and below double frequency oscillator unit is connected with metallization VIA.Preferably, pitch-row is crossed
From oscillator bottom about (0.10~0.15) λC, λCCentered on frequency wavelength.
Preferably, the width of the two-conductor feeder line is less than between two interior minor matters of a double frequency oscillator unit wherein arm
Away from 2 × D1, length is then longer 0.25 × λ than array element spacing dC, λCCentered on frequency wavelength.
Preferably, the interior minor matters of the oscillator arms and outer minor matters, this two groups of parallel minor matters it is different in size, work in difference
Frequency range；Interior minor matters save for brachyplast, work in high frequency；Outer minor matters are long minor matters, work in the length of low frequency, interior minor matters and outer minor matters
0.22~0.25 times of about respective corresponding frequency range centre wavelength；The width of each pair minor matters and length ratio be about 0.1~
0.3, adjacent minor matters are parallel to each other and are spaced a distance.
Preferably, the substrate is single-side coated copper plate, and generous length is Ld1×Wd1×Td1, dielectric constant and loss angle tangent point
Wei not εr1With tan δ1.Preferably, from all kinds of common double face coppers or air as medium substrate, permittivity εrFor 1
~10, shaped using printing technology or sheet metal process.
Prior art is contrasted, the utility model has advantages below：
Positive effect of the present utility model is：First, the double frequency half-wave dipole unit of more minor matters side by side is designed；2nd,
Array center's additional high oscillator unit；3rd, tandem parallel double conducting wire in center is fed；4th, feeder terminal short circuit, central point feedback
Electricity, the utility model realize two cell arrays in GSM and LTE double frequencies ultra wide band work (840-960MHz/1710-
2170MHz, VSWR<2.32, BW=25.33%,>31.17%)；Low-and high-frequency gain is respectively 5~6.5dBi, 4~5dBi；And
Each frequency range has preferable omni-directional pattern, and out-of-roundness is less than 1.23dBi, and efficiency is more than 84%；Size is smaller, and length and width are respectively：
1.03×λL、0.106×λL(λLFor lowest operating frequency wavelength).
In addition, the design can use ripe printed circuit technology to make, cost is cheap, reliability is high, it is raw to be easy to batch
Production, it is the preferable omnidirectional antenna scheme for being adapted to terminal/base station equipment.In addition, this method also have thinking novelty, clear principle,
The features such as method is pervasive, simple and easy, double frequency or multifrequency, the omnidirectional of more high-gain or setting for directional aerial for other frequency ranges
Meter and improvement are also applicable and effective.
【Brief description of the drawings】
Fig. 1 is the schematic diagram that defines of rectangular coordinate system used by antenna model.
Fig. 2 is the illustraton of model of conventional fat block ultra wide band printed dipole antenna.
Fig. 3 is the illustraton of model of the conventional broadband high-gain omnidirectional array antenna of dipoles.
Fig. 4 is the geometrical model figure of double frequency high-gain omni-directional antenna.
Fig. 5 is the geometrical model figure of two coaxial group of battle arrays of unit double frequency oscillator unit.
Fig. 6 is the geometrical model figure of addition high frequency oscillator unit among two unit double frequency oscillator unit arrays.
Fig. 7 is the geometrical model figure of the two-spot layered transducer elements of the double frequency high-gain omni-directional antenna of parallel double conducting wire feed.
Fig. 8 is that the end short dot of the two-spot layered transducer elements of the double frequency high-gain omni-directional antenna of parallel double conducting wire feed is local
Enlarged drawing.
Fig. 9 is that the apex drive point of the two-spot layered transducer elements of the double frequency high-gain omni-directional antenna of parallel double conducting wire feed is local
Enlarged drawing.
Figure 10 is the input impedance Z of the two-spot oscillator array antenna of double frequency high-gain omni-directional antennainFrequency characteristic.
Figure 11 is the reflectance factor of the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna | S11| curve.
Figure 12 is the standing wave VSWR curves of the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna.
Figure 13 is the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna in f1=0.84GHz gain pattern.
Figure 14 is the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna in f2=0.96GHz gain pattern.
Figure 15 is the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna in f3=1.71GHz gain pattern.
Figure 16 is the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna in f4=1.88GHz gain pattern.
Figure 17 is the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna in f5=2.17GHz gain pattern.
Figure 18 is the gain G of the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna with frequency f change curves.
Figure 19 is the E faces half-power beam width HBPW of the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna with frequency
Rate f change curves.
Figure 20 is the H faces out-of-roundness of the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna with frequency f change curves.
Figure 21 is the efficiency eta of the two-spot oscillator array antenna of double frequency high-gain omni-directional antennaAWith frequency f change curves.
This paper accompanying drawings are an and parts for constitution instruction for being expanded on further and understanding to of the present utility model,
With together with specific embodiment of the utility model be used for explain the utility model, but do not form to it is of the present utility model limitation or
Limit.
【Embodiment】
Preferred embodiment of the present utility model is provided below in conjunction with the accompanying drawings, to describe technical side of the present utility model in detail
Case.It should be noted that preferred embodiment as described herein is merely to illustrate and explained the utility model, it is not limited to
Or limit the utility model.
The utility model it is intended that mobile communication GSM900 and DCS1800/PCS1900 design a kind of two-band, high-gain,
The cheap AP websites/terminal antenna of omni-directional, high efficiency, miniaturization, cost, and be the double frequency or multi-frequency omni-directional day of other frequency ranges
The optimization design of line provides effective or beneficial reference method.
Fig. 1~9 are referred to, the design method of the double frequency high-gain omni-directional antenna comprises the following steps：
Step 1, rectangular coordinate system in space is established, see Fig. 1；
Step 2, construct double frequency oscillator unit：In XOY plane, in+X-axis D1Locate, along the+a width of L of length of Y-axis construction one1×
W1Interior minor matters 20, its end be wider section 21；Then, copy positioned at-X-axis D1Minor matters 20 in the mirror image at place, see Fig. 4 portion
Divide 20；Then, in the outside of minor matters 20 positioned at X-axis and-X-axis D2Place's a pair of symmetrical outer minor matters 10 of construction, it grows a width of L2×W2,
See Fig. 4 part 10；20 two groups of minor matters of outer minor matters 10 and interior minor matters are parallel to each other, and outer minor matters 10 are longer than interior minor matters 20, i.e. L1<
L2；Then, a center is constructed towards the horizontal minor matters 30 of lower process along X-direction, horizontal minor matters 30 are by outer minor matters 10 and interior minor matters
20 connect as one in bottom end, form the upper arm of oscillator, and the bottom 40 of each minor matters is not concordant, and the horizontal outward flange of minor matters 30 is curved
Trisection, see Fig. 4；Then, oscillator upper arm is gone out into oscillator underarm along X-axis image copying, upper and lower two-arm forms a double frequency oscillator list
Member, it is balanced feeding point 60 at the umbo of upper and lower two-arm, sees Fig. 4；Finally, by a block length it is generous be Ld1×Wd1×Td1, be situated between
Electric constant and loss angle tangent are respectively εr1With tan δ1Single-side coated copper plate be positioned over the oscillator back side, as printing oscillator base
Plate 50, is shown in Fig. 4；
Step 3, construct two cell arrays：By the double frequency oscillator unit of step 2 along Y-axis shift copy 1 time, one is formed
Unit two, the coaxial linear array that spacing is d；The upper arm of two oscillators is located at the front of substrate 50, and underarm is then located at the reverse side of substrate 50, sees figure
5；
Step 4, additional high oscillator unit：At two cell array centers of step 3, a pair of high frequency oscillator units are added
70, as two oscillator units of step 3, underarm is also located at the tow sides of medium substrate 50 respectively thereon, sees Fig. 6；
Step 5, balanced feeding network is set：In the medium substrate tow sides of step 4, along array center's axis direction
One two-conductor feeder line 80 is set, and its width is less than the spacing 2 of two interior minor matters 20 of a double frequency oscillator unit wherein arm
×D1, length is then about 0.25 × λ than array element spacing dC, wherein λCCentered on wavelength；The feeder line up and down of two-conductor feeder line respectively will
The upper arm and underarm of two double frequency oscillator units and high frequency oscillator unit are connected as a single entity, and form the upper arm of symmetric array with
Arm, and using the feeder line center 91 of two-conductor feeder line as the distributing point of array, see Fig. 7；
Step 6, add direct-current short circuit point and distributing point., will be double with metallization VIA 90 in two ends of two-conductor feeder line
Frequency vibration subelement up and down short circuit, and in the conductor heart distributing point 91 connect 50 Ω coaxial cables, its internal and external conductor be respectively welded in
The feed point pad of upper lower conductor, is shown in Fig. 8, Fig. 9.
The utility model constructs double frequency high-gain omni-directional antenna by above-mentioned steps, and it includes being arranged on substrate 50
At least two double frequency oscillator units, high frequency oscillator unit are provided between two neighboring double frequency oscillator unit, the double frequency oscillator list
Member and high frequency oscillator unit are attached feed by two-conductor feeder line.
Two oscillator arms of the double frequency oscillator unit include symmetrically arranged interior minor matters 20 respectively, right in the outside of minor matters 20
Claim the outer minor matters 10 set, interior minor matters 20 and the bottom of outer minor matters 10 are connected as one by horizontal minor matters 30.The interior minor matters 20 are grown
A width of L1×W1, its end is wider section 21；The outer minor matters 10 grow a width of L2×W2.The high frequency oscillator unit includes one group of brachyplast
70 symmetric arrays are saved in axis both sides, the brachyplast, which saves 70 ends, widened section 71.
20 two groups of minor matters of the outer minor matters 10 and interior minor matters are parallel to each other, and outer minor matters 10 are longer than interior minor matters 20, i.e. L1<L2.Should
The horizontal center of minor matters 30 is set to balanced feeding point 60, interior minor matters and the initiating terminal 40 of outer minor matters be not concordant, horizontal branch towards lower process
It is bending segment to save 30 outward flanges.Oscillator two-arm is spaced apart, and two-arm center edge is not concordant；Center high frequency oscillator and two
HFS profile among the double frequency oscillator at end may be the same or different.The length of interior minor matters and outer minor matters is about each corresponding
0.22~0.25 times of frequency range centre wavelength；The width of each pair minor matters and length ratio are about 0.1~0.3.Two neighboring double frequency
The spacing of oscillator unit is d, and at least two double frequencies oscillator unit is coaxial or collinear set battle array, the spacing of adjacent two array element are
(0.50~0.75) × λC, λCCentered on frequency wavelength.
The interior minor matters and outer minor matters of the oscillator arms, this two groups of parallel minor matters it is different in size, work in different frequency range；It is interior
Minor matters save for brachyplast, work in high frequency；Outer minor matters are long minor matters, work in low frequency, and the length of interior minor matters and outer minor matters is about each
From 0.22~0.25 times of corresponding frequency range centre wavelength；The width of each pair minor matters and length ratio are about 0.1~0.3, adjacent
Minor matters are parallel to each other and are spaced a distance.
The upper arm of at least two double frequencies oscillator unit and high frequency oscillator unit is located at the front of substrate 50, and underarm is then located at
The reverse side of substrate 50, the two-conductor feeder line 80 is arranged on the substrate tow sides, and is set along array center's axis direction, two-conductor
The upper arm of two double frequency oscillator units and high frequency oscillator unit is connected by the feeder line up and down of feeder line with underarm respectively, composition pair
Claim the upper arm and underarm of array.
The not wide quarter-wave transformer section of more piece of the two-conductor feeder line including cascade.In the feeder line of body feeder line
Distributing point 91 of the heart as array, specially connecting coaxial cable, 50 Ω coaxial cables.The internal and external conductor of cable connects double respectively
The upper lower conductor of conductor feeder line, it is welded in the feed point pad of lower conductor.In two ends of two-conductor feeder line, metallization VIA is used
90 connect short circuit above and below double frequency oscillator unit.Metallization VIA 90 is apart from oscillator bottom about (0.10~0.15) λC。
The width of the two-conductor feeder line 80 is less than the spacing 2 of two interior minor matters 20 of a double frequency oscillator unit wherein arm
×D1, length is then longer 0.25 × λ than array element spacing dC, wherein λCCentered on wavelength.
The substrate is single-side coated copper plate, and generous length is Ld1×Wd1×Td1, dielectric constant and loss angle tangent be respectively εr1With
tanδ1.From all kinds of common double face coppers or air as medium substrate, permittivity εrFor 1~10, using printing work
Skill or sheet metal process shape.
The utility model devises the double frequency half-wave dipole unit of minor matters side-by-side more than one first, i.e. the arm of oscillator one has four
Individual minor matters different in size, symmetric arrays are the long minor matters of a pair of low frequencies in oscillator central axis both sides, outside two-by-two, and inner side is then arranged
A pair of high frequency brachyplast sections of row.By optimizing length, width and the relative spacing of each minor matters, the dipole realizes GSM 824-
960MHz and LTE1710-2170MHz two-frequency operations, and two frequency ranges have preferable half-wave dipole directional diagram, gain 2-
3dBi, out-of-roundness are less than 1dB.In order to which gain is brought up into more than 4dBi, by coaxial group of battle array of two units, and using above-mentioned
Center series-feed network.Because the two-conductor feeder line dispersion at center is serious, low-and high-frequency oscillator array element can not meet same phase point simultaneously
Cloth, therefore low-and high-frequency gain difference is very big (high frequency reaches 5-6dBi, low frequency only 2dBi), is unsatisfactory for application demand.As it was previously stated, can only
Make full use of existing dimensional space.In the case where not increasing array length, a pair of high frequency oscillators are increased by the heart in an array
Unit, the utility model realize two cell arrays in GSM and LTE double frequencies ultra wide band work (840-960MHz/1710-
2170MHz, VSWR<2.32, BW=25.33%,>31.17%)；Low-and high-frequency gain is respectively 5~6.5dBi, 4~5dBi；And
Each frequency range has preferable omni-directional pattern, and out-of-roundness is less than 1.23dBi, and efficiency is more than 84%；Size is smaller, and length and width are respectively：
1.03×λL、0.106×λL, λLFor lowest operating frequency wavelength.
Design parameter refers to Figure 10~21.
Figure 10 is the input impedance Z of the two-spot oscillator array antenna of double frequency high-gain omni-directional antennainFrequency characteristic.Its
In, transverse axis (X-axis) is frequency f, unit GHz；The longitudinal axis (Y-axis) is input impedance Zin, unit Ω；Solid line represents real part Rin,
Dotted line represents imaginary part Xin。
Figure 11 is the reflectance factor of the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna | S11| curve.Wherein, it is horizontal
Axle (X-axis) is frequency f, unit GHz；The longitudinal axis (Y-axis) is S11Amplitude | S11|, unit dB.Known by figure, array antenna exists
GSM frequency ranges (0.84-1.04GHz, BW=242MHz, 25.33%) and LTE frequency ranges (1.62-2.2GHz, BW>577MHz,>
30.17%) realize good impedance matching (| S11|≤- 8.13dB), realize dual band operation.
Figure 12 is the standing wave VSWR curves of the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna.Wherein, transverse axis (X
Axle) it is frequency f, unit GHz；The longitudinal axis (Y-axis) is standing wave VSWR.Known by figure, array antenna is in GSM frequency ranges (0.84-
1.04GHz, BW=242MHz, 25.33%) and LTE frequency ranges (1.62-2.2GHz, BW>577MHz,>30.17%) realize
Good impedance matching (VSWR≤2.32dB), realizes dual band operation.
Figure 13 is the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna in f1=0.84GHz gain pattern.
Wherein, solid line represents H- faces (Theta=90 °, XOY plane) in figure, and dotted line represents E- faces (Phi=90 °, YOZ planes).By scheming
Know, antenna has preferable half-wave dipole directional diagram, gain G=4.125dBi, E faces half-power beam width HPBW in the frequency
=37.71 °, H faces out-of-roundness is less than 0.34dBi.
Figure 14 is the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna in f2=0.96GHz gain pattern.
Wherein, solid line represents H- faces (Theta=90 °, XOY plane) in figure, and dotted line represents E- faces (Phi=90 °, YOZ planes).By scheming
Know, antenna has preferable half-wave dipole directional diagram, gain G=4.862dBi, E faces half-power beam width HPBW in the frequency
=34.51 °, H faces out-of-roundness is less than 0.41dBi.
Figure 15 is the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna in f3=1.71GHz gain pattern.
Wherein, solid line represents H- faces (Theta=90 °, XOY plane) in figure, and dotted line represents E- faces (Phi=90 °, YOZ planes).By scheming
Know, antenna has preferable half-wave dipole directional diagram, gain G=4.924dBi, E faces half-power beam width HPBW in the frequency
=22.64 °, H faces out-of-roundness is less than 0.23dBi.
Figure 16 is the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna in f4=1.88GHz gain pattern.
Wherein, solid line represents H- faces (Theta=90 °, XOY plane) in figure, and dotted line represents E- faces (Phi=90 °, YOZ planes).By scheming
Know, antenna has preferable half-wave dipole directional diagram, gain G=6.74dBi, E faces half-power beam width HPBW in the frequency
=23.97 °, H faces out-of-roundness is less than 0.76dBi.
Figure 17 is the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna in f5=2.17GHz gain pattern.
Wherein, solid line represents H- faces (Theta=90 °, XOY plane) in figure, and dotted line represents E- faces (Phi=90 °, YOZ planes).By scheming
Know, antenna has preferable half-wave dipole directional diagram, gain G=6.27dBi, E faces half-power beam width HPBW in the frequency
=16.91 °, H faces out-of-roundness is less than 1.23dBi.
Figure 18 is the gain G of the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna with frequency f change curves.By scheming
Know, in two frequency ranges of GSM and LTE, antenna gain G is respectively 4~5dBi, 5~6.5dBi.
Figure 19 is the E faces half-power beam width HBPW of the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna with frequency
Rate f change curves.Known by figure, in two frequency ranges of GSM and LTE, E faces half-power beam width is respectively：HPBW=34~38 °,
13~25 °, H faces out-of-roundness is respectively smaller than 0.41dBi, 1.23dBi.
Figure 20 is the H faces out-of-roundness of the two-spot oscillator array antenna of double frequency high-gain omni-directional antenna with frequency f change curves.
Known by figure, in two frequency ranges of GSM and LTE, H faces out-of-roundness is respectively smaller than 0.41dBi and 1.23dBi respectively.
Figure 21 is the efficiency eta of the two-spot oscillator array antenna of double frequency high-gain omni-directional antennaAWith frequency f change curves.By
Figure is known, in two frequency ranges of GSM and LTE, antenna efficiency is respectively greater than 84% and 87% (up to 99%).
Preferred embodiment of the present utility model is these are only, is not limited to or limits the utility model.For this
For the research in field or technical staff, the utility model can have various modifications and variations.It is all in spirit of the present utility model
Within principle, any modification, equivalent substitution and improvements made etc., the protection model that the utility model is stated should be included in
Within enclosing.
Claims (10)
1. a kind of double frequency high-gain omni-directional antenna, it is characterised in that it includes being arranged at least two double frequency oscillators on substrate
Unit, high frequency oscillator unit is provided between two neighboring double frequency oscillator unit, the double frequency oscillator unit and high frequency oscillator unit
Feed is attached by two-conductor feeder line.
2. double frequency high-gain omni-directional antenna as claimed in claim 1, it is characterised in that two of the double frequency oscillator unit shake
Sub- arm includes symmetrically arranged interior minor matters, the symmetrically arranged outer minor matters on the outside of interior minor matters, interior minor matters and outer minor matters bottom respectively
Connected as one by horizontal minor matters.
3. double frequency high-gain omni-directional antenna as claimed in claim 2, it is characterised in that the high frequency oscillator unit includes one group short
Minor matters symmetric arrays are in axis both sides.
4. double frequency high-gain omni-directional antenna as claimed in claim 3, it is characterised in that two groups of minor matters phases of outer minor matters and interior minor matters
It is mutually parallel, and outer minor matters are longer than interior minor matters.
5. double frequency high-gain omni-directional antenna as claimed in claim 4, it is characterised in that the horizontal minor matters center towards lower process,
Balanced feeding point is set to, interior minor matters and the initiating terminal of outer minor matters be not concordant, and horizontal minor matters outward flange is bending segment.
6. double frequency high-gain omni-directional antenna as claimed in claim 1, it is characterised in that between two neighboring double frequency oscillator unit
Away from for d, at least two double frequencies oscillator unit is coaxial or collinear set battle array, the spacing of adjacent two array element for (0.50~0.75) ×
λC, wherein λCCentered on wavelength.
7. double frequency high-gain omni-directional antenna as claimed in claim 1, it is characterised in that the length of interior minor matters and outer minor matters is about
Each 0.22~0.25 times of corresponding frequency range centre wavelength；The width of each pair minor matters and length ratio are about 0.1~0.3.
8. double frequency high-gain omni-directional antenna as claimed in claim 1, it is characterised in that at least two double frequency oscillator units and height
The upper arm of frequency vibration subelement is located at substrate front side, and underarm is then located at substrate back side, and it is positive and negative that the two-conductor feeder line is arranged on the substrate
Two sides, and being set along array center axis direction, the feeder line up and down of two-conductor feeder line respectively by two double frequency oscillator units and
The upper arm of high frequency oscillator unit is connected with underarm, forms the upper arm and underarm of symmetric array.
9. double frequency high-gain omni-directional antenna as claimed in claim 8, it is characterised in that two-conductor feeder line includes the more piece of cascade
Not wide quarter-wave transformer section.
10. double frequency high-gain omni-directional antenna as claimed in claim 9, it is characterised in that the feeder line center of body feeder line is as battle array
The distributing point of row, connecting coaxial cable, the internal and external conductor of cable connect the upper lower conductor of two-conductor feeder line respectively, are presented in two-conductor
Two ends of line, will be short-circuit above and below double frequency oscillator unit with metallization VIA.
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| CN201720990599.7U CN207116688U (en) | 2017-08-09 | 2017-08-09 | Double frequency high-gain omni-directional antenna |
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| CN201720990599.7U CN207116688U (en) | 2017-08-09 | 2017-08-09 | Double frequency high-gain omni-directional antenna |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019205063A1 (en) * | 2018-04-26 | 2019-10-31 | 深圳市大疆创新科技有限公司 | Antenna and signal processing device for unmanned aerial vehicle |
| CN110829004A (en) * | 2018-08-07 | 2020-02-21 | 杭州海康威视数字技术股份有限公司 | Dual-frequency dual-polarized antenna |
| CN110880636A (en) * | 2019-11-28 | 2020-03-13 | 深圳市鼎耀科技有限公司 | Vehicle-mounted multi-system combined antenna and positioning antenna |
| CN111370858A (en) * | 2018-12-25 | 2020-07-03 | 杭州海康威视数字技术股份有限公司 | Directional UHF antenna and electronic equipment |
-
2017
- 2017-08-09 CN CN201720990599.7U patent/CN207116688U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019205063A1 (en) * | 2018-04-26 | 2019-10-31 | 深圳市大疆创新科技有限公司 | Antenna and signal processing device for unmanned aerial vehicle |
| CN110829004A (en) * | 2018-08-07 | 2020-02-21 | 杭州海康威视数字技术股份有限公司 | Dual-frequency dual-polarized antenna |
| CN110829004B (en) * | 2018-08-07 | 2022-02-08 | 杭州海康威视数字技术股份有限公司 | Dual-frequency dual-polarized antenna |
| CN111370858A (en) * | 2018-12-25 | 2020-07-03 | 杭州海康威视数字技术股份有限公司 | Directional UHF antenna and electronic equipment |
| CN110880636A (en) * | 2019-11-28 | 2020-03-13 | 深圳市鼎耀科技有限公司 | Vehicle-mounted multi-system combined antenna and positioning antenna |
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